CN102290946B - High-power air suspension permanent magnet high-speed motor - Google Patents
High-power air suspension permanent magnet high-speed motor Download PDFInfo
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- CN102290946B CN102290946B CN 201110137595 CN201110137595A CN102290946B CN 102290946 B CN102290946 B CN 102290946B CN 201110137595 CN201110137595 CN 201110137595 CN 201110137595 A CN201110137595 A CN 201110137595A CN 102290946 B CN102290946 B CN 102290946B
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- radial air
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- synchronous motor
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Abstract
The invention discloses a high-power air suspension permanent magnet high-speed motor, which comprises a permanent magnet synchronous motor rotor, a motor stator, a front radial air bearing, a rear radial air bearing, an axial thrust air bearing and a motor shell, wherein the permanent magnet synchronous motor rotor is driven by the motor stator to rotate and is suspended and supported through the front radial air bearing, the rear radial air bearing and the axial thrust air bearing; and the motor stator, the front radial air bearing, the rear radial air bearing, the axial thrust air bearing and the permanent magnet synchronous motor rotor are enclosed by the motor shell. Due to the application of the permanent magnet synchronous motor rotor, the magnetic field strength is higher and the size of the rotor is smaller, so that the motor is suitable for a higher rotation speed; and the power of the motor can be greatly increased by synchronously increasing the magnetic field strength and the rotation speed.
Description
Technical field
The present invention relates to a kind of powerful high-speed electric expreess locomotive, also relate to the p-m rotor and the air suspension bearing that are applied to this motor.
Background technology
High-speed electric expreess locomotive typically refers to the motor that rotating speed surpasses 10000r/min, because rotating speed is very high, high-speed electric expreess locomotive directly is connected with actuator as prime mover usually, has save complicated middle gear, and transmission efficiency is high, and noise is little; Because rotating speed is high, and the power density of motor is higher, effectively economical with materials is conveniently installed simultaneously.
High-speed electric expreess locomotive is the key technology of High-speed machining, is widely used in brill, mills, on the machining tool such as mill, usually is referred to as electric main shaft, not only can obtain larger productivity ratio, but also can obtain very high crudy, and can reduce production costs.China NC Machine electricity consumption main shaft is most of at present is import, and the common employing ball bearing of the electric main shaft of domestic production is as support.Because rotating speed is high, the ball bearing quick abrasion, the life-span is short, and the fog lubrication of use is polluted larger.Along with the development of new energy technology and the demand of low-carbon environment-friendly, high-speed electric expreess locomotive has larger development prospect in fields such as centrifugal compressor, distributed energy, hybrid vehicles, and its power of high-speed electric expreess locomotive of using as machine tooling is generally lower, can not satisfy the demand of these application.
Summary of the invention
The objective of the invention is to address the above problem, a kind of Large-power High-Speed motor with air bearing, use p-m rotor is provided.
A kind of high-power air suspension permanent magnet high-speed motor of the present invention, comprise: permanent-magnetic synchronous motor rotor, drive the motor stator of permanent-magnetic synchronous motor rotor rotation, the front radial air bearing of suspension support permanent-magnetic synchronous motor rotor, rear radial air bearing and axial thrust air bearing, and the electric machine casing of encirclement motor stator, air bearing and permanent-magnetic synchronous motor rotor.
The invention has the advantages that:
System configuration is simple, power density is large, overall efficiency is high, environmental protection, and it specifically is expressed as follows.
(1) uses advanced permanent-magnetic synchronous motor rotor but not common rotor has reduced loss, can improve overall efficiency;
(2) use permanent-magnetic synchronous motor rotor so that magnetic field intensity is larger, and rotor size is less, so go for higher rotating speed, the synchronous raising of magnetic field intensity and rotating speed can improve the power of motor greatly;
(3) use permanent-magnetic synchronous motor rotor, can directly drive by variable frequency power supply, realize soft start and the frequency control function of motor, in the time of can weakening machine startup to the impact of electrical network;
(4) replaced common roller bearing with aforementioned air bearing, air bearing is between permanent-magnetic synchronous motor rotor and the electric machine casing, by forming the physical contact between the isolated permanent-magnetic synchronous motor rotor of high pressure air film and bearing, can make permanent-magnetic synchronous motor rotor without frictional rotation, can improve dramatically the rotating speed of rotor, realize High Rotation Speed, can improve overall efficiency, increase simultaneously the useful life of machine;
(5) with behind the common roller bearing of air bearing replacement, save the oil system of complicated heaviness, mitigation system weight, and exempted the possibility that lubricating oil is revealed, can be used for the free of contamination application of high-cleanness such as pharmaceuticals industry.
Description of drawings
Fig. 1 is the structural representation of a kind of high-power air suspension permanent magnet high-speed motor of the present invention;
Fig. 2 is the structural representation of actuator of the present invention when being impeller;
Fig. 3 is the structural representation of permanent-magnetic synchronous motor rotor of the present invention, air bearing, thrust button;
Among the figure:
The 1-permanent-magnetic synchronous motor rotor; The 2-motor stator; Radial air bearing before the 3-; Radial air bearing behind the 4-; 5-axial thrust air bearing; The 6-electric machine casing; The anti-nut of prizing of 7-; 8-actuator; The 9-thrust button.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The present invention is a kind of high-power air suspension permanent magnet high-speed motor, as shown in Figure 1, comprise: permanent-magnetic synchronous motor rotor 1, drive the motor stator 2 of permanent-magnetic synchronous motor rotor 1 rotation, the front radial air bearing 3 of suspension support permanent-magnetic synchronous motor rotor 1, rear radial air bearing 4 and axial thrust air bearing 5, and surround the electric machine casing 6 of motor stator 2, three air bearing and permanent-magnetic synchronous motor rotor 1.
Permanent-magnetic synchronous motor rotor 1 is that magnet steel is embedded in the rotating shaft surface, then is ground to precision, metal surface plug-in type rotor.Because used magnet steel to replace aluminum strip or copper bar, by the rotor permanent magnet excitation, its power factor can reach or near 1.0, not have revolutional slip, on the rotor without first-harmonic iron, copper loss.Rotor is better than aluminium rotor or copper rotor.
The front end of permanent-magnetic synchronous motor rotor 1 directly links to each other with actuator 8, the external part of permanent-magnetic synchronous motor rotor 1 passes the central through hole of actuator 8, then put on the step surface of armature spindle that anti-sled nut 7 is pressed on actuator 8 permanent-magnetic synchronous motor rotor 1 fixingly, Fig. 2 is the legend of actuator 8 during for impeller.The direction of rotation of actuator 8 is opposite with the rotation direction of anti-sled nut 7, then when rotated, because the effect of frictional force can make anti-sled nut 7 further screw, plays locking effect.
Such as Fig. 1, shown in Figure 3, be the shafting design of high-speed electric expreess locomotive, permanent-magnetic synchronous motor rotor 1 is supported jointly by front radial air bearing 3, rear radial air bearing 4 and axial thrust air bearing 5; The gap that has 5 μ m～25 μ m between the bearing shell of front radial air bearing 3, rear radial air bearing 4 and the bearing surface of permanent-magnetic synchronous motor rotor 1, to form the contact of isolated two faces of high pressure air film during work, radial support power is provided, and feels relieved by the High Rotation Speed of permanent-magnetic synchronous motor rotor 1; Simultaneously, armature spindle at permanent-magnetic synchronous motor rotor 1 has a thrust button 9, rotor is installed by front radial air bearing 3 and axial thrust air bearing 4 in the both sides of thrust button 9, on the front radial air bearing 3 the axial thrust pore is arranged also, gap between the two sides of two bearings and thrust button 9 is 5 μ m～20 μ m, forms the high pressure air film during work axial thrust power is provided.
Front radial air bearing 3, rear radial air bearing 4, axial thrust air bearing 5 and motor stator 2 all are installed in the electric machine casing 6, cooperate by the microgap, axially position with end cap and step surface.Motor stator 2 is coiled by the silicon steel sheet stack adduction and forms, and three phase supply directly by transducer drive, can be realized the frequency control function.Be provided with axial cylindrical gas channels in the electric machine casing 6, be used for providing gases at high pressure to front radial air bearing 3, rear radial air bearing 4 and axial thrust air bearing 5.
During high-speed electric expreess locomotive work, at first open external high-pressure air source, provide respectively gases at high pressure by the axial cylindrical gas channels in the electric machine casing 6 to front radial air bearing 3, rear radial air bearing 4 and the axial thrust air bearing 5 at motor two ends, after the ejection of nozzle aperture, in axle and bearing clearance, form the high pressure air film, permanent-magnetic synchronous motor rotor 1 is suspended.Journal bearing and cod provide respectively radial and axial support, guarantee that permanent-magnetic synchronous motor rotor 1 breaks away from fully and the physical contact of miscellaneous part.Like this, greatly reduce frictional force and the noise of permanent-magnetic synchronous motor rotor 1 running, under the motor stator 2 of electric machine casing 6 inside drives, can realize High Rotation Speed, improved efficient and the life-span of whole system.
Source of the gas is opened, after air bearing is started working, start variable frequency power supply to motor stator 2 power supplies, under the effect of alternating magnetic field, drive permanent-magnetic synchronous motor rotor 1 rotation, and the front end of permanent-magnetic synchronous motor rotor 1 utilizes nut extruding actuator directly to be rotated by permanent-magnetic synchronous motor rotor 1 drive actuator to the frictional force on the back seat; When needs adjustment actuating mechanism rotating speed, regulate the output frequency of variable frequency power supply, change permanent-magnetic synchronous motor rotor 1 rotary speed, can the adjustment actuating mechanism rotating speed.
In the time will quitting work, at first the frequency converter output frequency slowly is adjusted to zero, treat to close again external source of the gas and stop air feed after the permanent-magnetic synchronous motor rotor 1 complete stall.
Claims (3)
1. high-power air suspension permanent magnet high-speed motor is characterized in that, comprises permanent-magnetic synchronous motor rotor, motor stator, front radial air bearing, rear radial air bearing, axial thrust air bearing and electric machine casing;
Motor stator drives the permanent-magnetic synchronous motor rotor rotation, front radial air bearing, rear radial air bearing, axial thrust air bearing suspension support permanent-magnetic synchronous motor rotor, electric machine casing surrounds motor stator, front radial air bearing, rear radial air bearing, the axial thrust air bearing, permanent-magnetic synchronous motor rotor, the axle of described permanent-magnetic synchronous motor rotor is provided with a thrust button, radial air bearing and axial thrust air bearing before install the both sides of thrust button, described front radial air bearing is provided with the axial thrust pore, described front radial air bearing, rear radial air bearing, axial thrust air bearing and motor stator all are installed in the electric machine casing, cooperate by the microgap, axially position with end cap and step surface, be provided with axial cylindrical gas channels in the described electric machine casing, be used for to front radial air bearing, rear radial air bearing and axial thrust air bearing provide gases at high pressure, described front radial air bearing, be provided with the gap of 5 μ m～25 μ m between the bearing shell of rear radial air bearing and the bearing surface of rotor, front radial air bearing and thrust button, gap between axial thrust air bearing and the thrust button is 5 μ m～25 μ m.
2. high-power air suspension permanent magnet high-speed motor according to claim 1 is characterized in that, the rotating shaft surface inserting magnet steel of described permanent-magnetic synchronous motor rotor.
3. high-power air suspension permanent magnet high-speed motor according to claim 1 is characterized in that, described motor stator is coiled by the silicon steel sheet stack adduction and forms, place motor stator peripheral, three phase supply directly by transducer drive, is realized the frequency control function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110137595 CN102290946B (en) | 2011-05-25 | 2011-05-25 | High-power air suspension permanent magnet high-speed motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110137595 CN102290946B (en) | 2011-05-25 | 2011-05-25 | High-power air suspension permanent magnet high-speed motor |
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| CN102290946A CN102290946A (en) | 2011-12-21 |
| CN102290946B true CN102290946B (en) | 2013-02-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104218707A (en) * | 2014-09-17 | 2014-12-17 | 九江精密测试技术研究所 | High-precision large-size hollow shaft system |
| CN105215384A (en) * | 2015-07-31 | 2016-01-06 | 四川省兴旺达精密机电有限公司 | A kind of ultrahigh speed air bearing motor for minute surface Digit Control Machine Tool |
| CN107332389B (en) * | 2017-08-24 | 2021-09-14 | 莱克电气股份有限公司 | Blower motor and blower |
| CN109099075A (en) * | 2018-09-03 | 2018-12-28 | 深圳市淳睿贸易有限公司 | A kind of centrifugal clutch idling drive mechanism |
| CN111049309A (en) * | 2019-12-11 | 2020-04-21 | 无锡市源昌机械制造有限公司 | High-performance air bearing motor |
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| CN1003185B (en) * | 1986-04-29 | 1989-02-01 | 西安交通大学 | All-dynamic pressured gas bearing hypothermia boost expander |
| IL109967A (en) * | 1993-06-15 | 1997-07-13 | Multistack Int Ltd | Compressor |
| CN1594890A (en) * | 2004-06-23 | 2005-03-16 | 西安交通大学 | High speed power driven magnetic suspension centrifugal blower |
| CN101304195B (en) * | 2008-07-01 | 2011-05-11 | 上海大学 | Ultraprecise electric spindle supported mixedly by a plurality of types of bearing |
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Effective date of registration: 20180428 Address after: 528300 floor three, 8 East Bridge Road, Ronggui Desheng neighborhood, Shunde District, Foshan, Guangdong Patentee after: FOSHAN TEBO TECHNOLOGY CO.,LTD. Address before: 100088 Room 308, 3 story, South commercial building, Haidian District, Beijing. Patentee before: Beijing Hudu Energy Technology Co.,Ltd. |
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Address after: Room 202, Building 4, No. 2 Kechuang North Road, Wangchun Industrial Park, Haishu District, Ningbo City, Zhejiang Province, 315012 Patentee after: Ningbo Yuntebo Technology Co.,Ltd. Address before: 528300 floor three, 8 East Bridge Road, Ronggui Desheng neighborhood, Shunde District, Foshan, Guangdong Patentee before: FOSHAN TEBO TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20220824 Address after: 315012 part of the first floor of buildings 1, 3 and 2, No. 8, Yunlin Middle Road, Wangchun Industrial Park, Haishu District, Ningbo City, Zhejiang Province Patentee after: Ningbo hudu Energy Technology Co.,Ltd. Address before: Room 202, Building 4, No. 2 Kechuang North Road, Wangchun Industrial Park, Haishu District, Ningbo City, Zhejiang Province, 315012 Patentee before: Ningbo Yuntebo Technology Co.,Ltd. |
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